There is no need to worry if you follow your treating doctors advise. And do remember the following things
1. Always consult a physician whenever you get a fever
even a sore throat
and you will need a more strong antibiotics
2. Do an echo cardiogram every 4 month's just to be on the safer side. Or visit your cardiiologist very 4 months and follow his schedule even if you are fully healthy as studies proven there is evidence that itcan recur.
3. Be happy and do continue your physicAL activities . Avoid booze and smoking